Laminated glazing

Abstract

A laminated glazing, and an associated method and use, including a first and a second glass panels laminated together by an interlayer assembly. The interlayer assembly includes a multi-layered acoustic thermoplastic interlayer. The interlayer assembly further includes a thermoplastic layer with low acoustic performances and placed between the multi-layered acoustic thermoplastic interlayer and the first or the second glass panel. The light transmission of the multi-layered acoustic thermoplastic interlayer (TLc) equals to, or is higher, than 50% of the light transmission of the thermoplastic layer (TLd).

1 : A laminated glazing comprising a first glass panel and a second glass panel laminated together by an interlayer assembly the interlayer assembly further comprises
 a multi-layered acoustic thermoplastic interlayer,   a thermoplastic layer with low acoustic performances placed between the multi-layered acoustic thermoplastic interlayer and the first glass panel or the second glass panel, and   wherein a light transmission of the multi-layered acoustic thermoplastic interlayer (TLc) equals to or is higher than 50% of the light transmission of the thermoplastic layer with low acoustic performance (TLd) (TLc≥0.5 TLd).   
     
     
         2 : The laminated glazing according to claim wherein the light transmission of the thermoplastic layer (TLd) equals to or is lower than 80% of the light transmission of the multi-layered acoustic thermoplastic interlayer (TLc) (TLd≤0.8 TLc). 
     
     
         3 : The laminated glazing according to  claim 1 , wherein the multi-layered acoustic thermoplastic interlayer comprises a soft thermoplastic interlayer, a first thermoplastic interlayer and a second thermoplastic interlayer; the soft thermoplastic interlayer being sandwiched between the first thermoplastic interlayer and the second thermoplastic interlayer. 
     
     
         4 : The laminated glazing according to  claim 1 , wherein the thermoplastic layer is a polyvinyl butyral. 
     
     
         5 : The laminated glazing according to  claim 1 , wherein the thermoplastic layer comprises a recycled material. 
     
     
         6 : The laminated glazing according to  claim 1 , wherein a thickness of the first glass panel and a thickness of the second glass panel are equal to or are lower than 2.1 mm. 
     
     
         7 : The laminated glazing according to  claim 1 , wherein a thickness of the multi-layered acoustic thermoplastic interlayer equals to or is lower than 0.8 mm. 
     
     
         8 : The laminated glazing according to  claim 1 , wherein the thermoplastic layer is thinner than the multi-layered acoustic thermoplastic interlayer. 
     
     
         9 : The laminated glazing according to  claim 1 , wherein a thickness of the thermoplastic layer equals to or is lower than 0.5 mm. 
     
     
         10 : The laminated glazing according to  claim 1 , wherein a sum of a thickness of the multi-layered acoustic thermoplastic interlayer and a thickness of the thermoplastic layer is higher than or equals to 0.85 mm. 
     
     
         11 : The laminated glazing according to  claim 1 , wherein the thermoplastic layer has a following transmission colour defined by illuminant D65 with an incident angle of 10 deg.:
   45≤ L*≤ 55,
     −3.0≤ a*≤ 1.0, and
     −1.0≤ b*≤ 3.0.
   
     
     
         12 : A method of producing a laminated glazing according to  claim 1 , comprising:
 assembling layers of the interlayer assembly together, and   placing the interlayer assembly between the first glass panel and the second glass panel.   
     
     
         13 : A method colour matching a laminated glazing according to  claim 1  with a glazing assembly, comprising:
 calculating an a* and a b* of the glazing assembly, 
 selecting the thermoplastic layer to have the laminated assembly with a* and b* being substantially equal to the calculating of a* and b*, and 
 assembling the selected thermoplastic layer with a multi-layered acoustic thermoplastic interlayer between the first glass panel and the second glass panel. 
 
     
     
         14 : A method for installing a thermoplastic layer in a laminated glazing according to  claim 1 , comprising:
 absorbing a mismatch of a shape between the first glass panel and the second glass panel, and   colour matching the laminated assembly with a glazing assembly placed next to the laminated assembly.   
     
     
         15 : The laminated glazing according to  claim 1 , wherein the light transmission of the multi-layered acoustic thermoplastic interlayer (TLc) equals to or is higher than 60% of the light transmission of the thermoplastic layer (TLd) (TLc≥0.6 TLd). 
     
     
         16 : The laminated glazing according to  claim 1 , wherein the light transmission of the multi-layered acoustic thermoplastic interlayer (TLc) equals to or is higher than 65% of the light transmission of the thermoplastic layer (TLd) (TLc≥0.65 TLd). 
     
     
         17 : The laminated glazing according to  claim 1 , wherein the light transmission of the thermoplastic layer (TLd) equals to or is lower than 75% of the light transmission of the multi-layered acoustic thermoplastic interlayer (TLc) (TLd≤0.75 TLc). 
     
     
         18 : The laminated glazing according to  claim 1 , wherein a thickness of the first glass panel and a thickness of the second glass panel are equal to or are lower than 1.9 mm. 
     
     
         19 : The laminated glazing according to  claim 1 , wherein a thickness of the multi-layered acoustic thermoplastic interlayer equals to or is lower than 0.6 mm. 
     
     
         20 : The laminated glazing according to  claim 1 , wherein a thickness of the thermoplastic layer equals to or is lower than 0.4 mm.